/usr/share/maven-repo/bsf/bsf/debian/bsf-debian.jar is in libbsf-java 1:2.4.0-5build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/bsf/bsf/debian/../../../../java/bsf-2.4.0.jar